CN1076705A - The continuous decomposition method of polyurethane foam material and waste material - Google Patents
The continuous decomposition method of polyurethane foam material and waste material Download PDFInfo
- Publication number
- CN1076705A CN1076705A CN92108064A CN92108064A CN1076705A CN 1076705 A CN1076705 A CN 1076705A CN 92108064 A CN92108064 A CN 92108064A CN 92108064 A CN92108064 A CN 92108064A CN 1076705 A CN1076705 A CN 1076705A
- Authority
- CN
- China
- Prior art keywords
- polyurethane foam
- moh
- water
- add
- polyethers
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/62—Plastics recycling; Rubber recycling
Landscapes
- Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
Abstract
A kind of polyurethane foam flaw-piece material and waste material are decomposed into polyalcohol polyether and tolylene diamine technology continuously, it has overcome traditional technology can only batch production, and enzymolysis auxiliary agent was many and expensive in used minute; Many shortcomings of poor product quality, for the cortex material and the waste material of sponge factory solved comprehensive utilization, problem such as reduce cost and prevent the pollution of the environment, (practice midwifery in polyurethane foam factory or chemical plant to be fit to sponge.
Description
The present invention is decomposed into the method for the raw material of production polyurethane continuously for polyurethane foam material and waste material.
When production polyurethane porous plastics (hereinafter to be referred as foam), there is (W) 12% pattern cladding to send out and do not steep, thereby can't use; No matter hard, semihard or soft polyurethane porous plastics generally use after 10 years and all can can't utilize because of aging again, promptly become refuse, and these refuses are difficult for degraded, and it is poisonous again burn, thereby causes the serious environmental pollution.On the other hand, about 10,000 yuan per ton of the cost of production polyurethane porous plastics, along with the expansion of porous plastics range of application, output increases day by day, thereby the also corresponding increase of the waste material that causes thus.It is continuous production that the present invention changes batch production, all lower than glycol method, hydramine method, alcoholate method, pure phosphorus method cost, rate of recovery height, and the quality product height can be directly used in foaming.The present invention proposes the technical solution of sending out following.
With after the polyurethane foam chopping, add MOH(M and be one or more of Na, K, Li, Ca) only when going into operation, add polyvalent alcohol or its polyethers.Foam: MOH: polyvalent alcohol or its polyethers, be 1: 0.1～0.5: 0.15～0.45, be heated to below 180 ℃, after this (W) proportioning of foam and MOH is 1: 0.15～0.45, after beginning decomposition, only add MOH and no longer add polyvalent alcohol or its polyethers, temperature is controlled at below 180 ℃, and after this foam and MOH add according to the above ratio gradually, resultant is emitted from below through filter screen, degradation production is through decolouring, filter, successively respectively add 0.3～3 times of non-polar solvent (ester class or halohydrocarbon) and water, stir, leave standstill (or centrifugal) separatory, oil reservoir boils off water and solvent, gets polyalcohol polyether, and water layer is through concentrating, crystallization, recrystallization or vacuum distilling get tolylene diamine.Also the degradation production elder generation vacuum distilling of emitting can be got tolylene diamine, and then handle polyalcohol polyether.
Now the present invention is further illustrated in conjunction with the embodiments
Embodiment 1: with the soft foam material of polyurethane, butyleneglycol, the MOH(M of chopping is Li, K, Na, Ca) press 1: 0.1～0.5: 0.15～0.3 W than adding reaction vessel, be heated to below 180 ℃, after this constantly press foam: MOH, the W ratio is 1: 0.15～0.45 reinforced.The resultant of emitting through filter screen adds activated carbon decolorizing, filtration, filtrate and respectively adds 0.4～3 times of non-polar solvent (as ester, halohydrocarbon) and water, stir, leave standstill (or centrifugal), separatory, oil reservoir dehydration and solvent get polyalcohol polyether, can be directly used in the production porous plastics, water layer is through concentrating, and recrystallization gets tolylene diamine, tolylene diamine adds phosgene, generates tolylene diisocyanate.
Embodiment 2: adding polyvalent alcohol or its polyethers and MOH(M after the rigid foam waste material is pulverized is Li, K, Na, Ca) three presses 1: 0.2～0.28: 0.29～0.4 W than adding reaction vessel, be heated to below 180 ℃, after this by foam: MOH(W) than being 1: 0.15～0.3 reinforced, the resultant of emitting through filter screen adds activated decoloration, in 0.1～5mmHg, 100～170 ℃ distill the crude cresylic acid diamines, do not steam thing after filtration, filtrate adds 0.3～5 times of non-polar solvent and water, stir, centrifugal or leave standstill oil reservoir dehydration and solvent, get polyalcohol polyether, product of distillation gets tolylene diamine through recrystallization, adds phosgene and generates tolylene diisocyanate.
Claims (5)
1, a kind of polyurethane foam waste or flaw-piece material continuous decomposition process, it is characterized in that with polyvalent alcohol or its polyethers be initial minute enzymolysis auxiliary agent, it and MOH (M is one or more of Li, K, Na, Ca) are added reaction vessel, decompose continuously, product is polyalcohol polyether through making with extra care, the tolylene diamine that connect to produce after purifying, with phosgene reaction be tolylene diisocyanate.
2, the described continuous decomposition process of claim 1, it is characterized in that after the chopping of polyurethane foam, add polyvalent alcohol or its polyethers, MOH(M and be among Li, K, Na, the Ca one or more), the three is by 1: 0.1～0.5: 0.15～0.45, add reaction vessel successively, and below the temperature control to 180 ℃, after question response begins, no longer add polyvalent alcohol or its polyethers, be one or more of Li, K, Na, Ca only by foam: MOH(M) (W than) 1: 0.15～0.45 feed in raw material, and resultant is intermittently emitted from the bottom through filter screen.
3, the described polyalcohol polyether of claim 1 is refining, the resultant that it is characterized in that emitting is through decolouring, filtration, successively respectively add 0.3～3 times of non-polar solvent (as ester class or halohydrocarbon) and water, through stirring (or jolting), leaving standstill or (centrifugal), separatory, oil reservoir is refining polyalcohol polyether through deviating from water and solvent.
4, the tolylene diamine process for purification that connect to produce has two, and one is a recrystallization, and it two is decompression (vacuum) distillation, and latter's distillation condition is 165～390 ℃ of temperature, 0.5～5mmHg.
5, the described recrystallization of claim 4 is characterized as the described water lotion of claim 3 through concentrating, and water or pure recrystallization, product are the refined toluene diamines.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN92108064A CN1076705A (en) | 1992-03-21 | 1992-03-21 | The continuous decomposition method of polyurethane foam material and waste material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN92108064A CN1076705A (en) | 1992-03-21 | 1992-03-21 | The continuous decomposition method of polyurethane foam material and waste material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1076705A true CN1076705A (en) | 1993-09-29 |
Family
ID=4943189
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN92108064A Pending CN1076705A (en) | 1992-03-21 | 1992-03-21 | The continuous decomposition method of polyurethane foam material and waste material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1076705A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104311796A (en) * | 2014-04-08 | 2015-01-28 | 何靖 | Method for preparing thermosetting amino resin by utilizing waste polyurethane |
| CN104327300A (en) * | 2014-11-10 | 2015-02-04 | 镇江中化聚氨酯工业设备有限公司 | Alkaline hydrolysis processing technology of polyurethane wastes |
| CN111844526A (en) * | 2019-09-18 | 2020-10-30 | 赢胜节能集团有限公司 | Method for recycling leftover materials of rubber sponge |
-
1992
- 1992-03-21 CN CN92108064A patent/CN1076705A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104311796A (en) * | 2014-04-08 | 2015-01-28 | 何靖 | Method for preparing thermosetting amino resin by utilizing waste polyurethane |
| CN104327300A (en) * | 2014-11-10 | 2015-02-04 | 镇江中化聚氨酯工业设备有限公司 | Alkaline hydrolysis processing technology of polyurethane wastes |
| CN111844526A (en) * | 2019-09-18 | 2020-10-30 | 赢胜节能集团有限公司 | Method for recycling leftover materials of rubber sponge |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |